Christof says to Sylvia, " I have given Truman a chance to lead a normal life. Has he?

Actually Christof has not given Truman a chance to lead a normal life. The "normal" life Truman has lead has been artificial. Although relatively free of tragedy, Truman leads an insulated life with a pretty low emotional maturity level. A "normal" life includes the chaos that we all live with daily. Truman's life was scripted.